From Fensome et al., 2019:
Brigantedinium asymmetricum Matsuoka, 1987, p.56, pl.5, figs.10–12; text-fig.4B ex Head, 1996b, p.1231. Holotype: Matsuoka,
1987, pl.5, figs.10–11. This name was not validly published in Matsuoka (1987, p.56) since the generic name
Brigantedinium was not validly published at that time. Age: Holocene.

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